The India Meteorological Department (IMD) has stated that weather activity over parts of South India is expected to intensify from October 24 onwards as a low-pressure system begins to develop over the southeast and adjoining east-central Bay of Bengal. The met department has notified that this developing weather pattern could lead to widespread rainfall, thunderstorms and localised heavy spells across several coastal and interior regions in the days ahead.
“The well-marked low pressure area over southwest Bay of Bengal off Tamil Nadu coast moved nearly northwestwards across north Tamil Nadu, Puducherry and south Andhra Pradesh coasts and lay over the north coastal Tamil Nadu and neighbourhood at 1730 hrs IST of today, the Oct. 22, 2025,” read an IMD update on X (formerly Twitter). It added, “It is likely to move west-northwestwards across north Tamil Nadu and south Andhra Pradesh and weaken into a low-pressure area during the next 24 hours.”
The Well marked low pressure area over north coastal Tamil Nadu and neighbourhood moved west-northwestwards and lay over north interior Tamil Nadu & neighbourhood at 2330 hrs IST of yesterday, the 22nd October 2025.
It is likely to continue to move west-northwestwards across…— India Meteorological Department (@Indiametdept) October 22, 2025
Weather forecast for Southern India
As per the weather bulletin, light to moderate showers along with thunderstorms are expected to take place over parts of Tamil Nadu between October 24 and October 28. A heavy downpour for a brief period is also possible during this period. Coastal Andhra Pradesh, Yanam and Rayalaseema are likely to receive wet conditions between October 24 and October 26 and again on October 29. Parts of Telangana are also expected to get occasional rains on October 29.
The met department predicts that Kerala and Mahe could experience another surge in rainfall activity between October 27 and October 29, whereas coastal stretches of Karnataka are likely to receive showers on October 25 and October 26. The department also warned that thunderstorms accompanied by lightning are expected to continue across most of the southern region for at least 5 days from today. Rainfall may pick up momentum again over Tamil Nadu toward the end of the week.
Sea conditions are expected to be rough
Apart from rainfall activity, the IMD stated that sea conditions are forecast to continue to be rough to very rough over the southeast and adjoining east-central Arabian Sea till October 25. Similar conditions are expected to prevail around the Lakshadweep, the south Tamil Nadu, the coasts of Kerala and coastal Karnataka.
Fishermen have been advised to avoid going into the sea until the condition improves. Thunderstorms and lightning are likely to take place over the Andaman and Nicobar islands on October 26, whereas lightning may impact Chhattisgarh, Vidarbha and Madhya Pradesh.